<template>
	<div class="list" ref="wrapper">
		<div>
			<div class="area">
				<div class="title border-topbottom">当前城市</div>
				<div class="button-list">
					<div class="button-wrapper">
						<div class="button">{{this.currentCity}}</div>
					</div>
				</div>
			</div>
			<div class="area">
				<div class="title border-topbottom">热门城市</div>
				<div class="button-list">
					<div
					 class="button-wrapper"
					 v-for="item of hot"
					 :key="item.id"
					 @click="handleCityClick(item.name)"
					>
						<div class="button">{{item.name}}</div>
					</div>
				</div>
			</div>
			<div class="area"
			 v-for="(item,key) of cities"
			  :key="key"
			  :ref="key"
			  >
				<div class="title border-topbottom">{{key}}</div>
				<div class="item-list">
					<div
					 	class="item border-bottom"
					 	v-for="innerItem of item"
						@click="handleCityClick(innerItem.name)"
					>
						{{innerItem.name}}
			</div>
				</div>
			</div>
			
		</div>
	</div>
</template>

<script>
import Bscroll from 'better-scroll'
import { mapState,mapMutations } from 'vuex'
export default {
	name:'CityList',
	props: {
		hot: Array,
		cities: Object,
		letter: String
	},
	computed: {
		...mapState({
			currentCity:'city'
		})
	},
	methods: {
		handleCityClick (city) {
			this.changeCity(city)
			this.$router.push('/')
		},
		...mapMutations(['changeCity'])
	},
	watch: {
		letter () {
			if (this.letter) {
				const element = this.$refs[this.letter][0]
				this.scroll.scrollToElement(element)
			}
		}
	},
	mounted () {
		this.scroll = new Bscroll(this.$refs.wrapper)
	}
}
</script>

<style lang="stylus" scoped>
	@import '~styles/varibles.styl'
	.border-topbottom
		&:before
			border-color: #ccc
		&:after
			border-color: #ccc
	.list
		position: absolute
		top: 1.58rem
		left:0
		right:0
		bottom:0
		overflow: hidden
	.title
		line-height: .54rem
		background: #eee
		padding-left: .2rem
		color: #666
		font-size: .26rem
	.button-list
		overflow: hidden
		padding: .1rem .6rem .1rem .1rem
	.button-wrapper
		float: left
		width: 33.33%
	.button
		text-align: center
		margin: .1rem
		padding .1rem 0
		border: .02rem solid #ccc
		border-radius: .06rem
	.item-list
		.item
			line-height: .76rem
			padding-left:.2rem
</style>
